{"record":{"id":"a89ab9fe6ca9aad0","repo":"flipped-aurora/gin-vue-admin","slug":"w-a89ab9","errorCode":null,"errorMessage":"创建编译根目录失败: %w","messagePattern":"创建编译根目录失败: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"server/plugin/ai/service/sys_cli_build.go","lineNumber":89,"sourceCode":"\tapplyCliBuildBaseURL(&manifest, req.BaseURL)\n\tmanifestBytes, err := marshalSysCliManifest(manifest)\n\tif err != nil {\n\t\treturn \"\", nil, err\n\t}\n\treturn s.compileCliBinary(cli, manifestBytes, goos, goarch)\n}\n\n// compileCliBinary 把 manifest 内嵌进 gva 源码副本并交叉编译，返回二进制文件名与内容。\nfunc (s *cliService) compileCliBinary(cli autoModel.SysCli, manifestBytes []byte, goos, goarch string) (string, []byte, error) {\n\tif _, err := exec.LookPath(\"go\"); err != nil {\n\t\treturn \"\", nil, fmt.Errorf(\"服务器未安装 Go 工具链，无法编译: %w\", err)\n\t}\n\tabsBuildRoot, err := filepath.Abs(cliBuildDir)\n\tif err != nil {\n\t\treturn \"\", nil, fmt.Errorf(\"解析编译目录失败: %w\", err)\n\t}\n\tif err := os.MkdirAll(absBuildRoot, 0o755); err != nil {\n\t\treturn \"\", nil, fmt.Errorf(\"创建编译根目录失败: %w\", err)\n\t}\n\n\tbuildDir, err := os.MkdirTemp(absBuildRoot, \"cli-\")\n\tif err != nil {\n\t\treturn \"\", nil, fmt.Errorf(\"创建编译目录失败: %w\", err)\n\t}\n\tdefer os.RemoveAll(buildDir)\n\n\tif err := copyCliSources(cliSourceDir, buildDir); err != nil {\n\t\treturn \"\", nil, err\n\t}\n\tif err := writeEmbeddedManifest(buildDir, manifestBytes); err != nil {\n\t\treturn \"\", nil, err\n\t}\n\n\tbinaryName := sanitizeSingleSegmentSlug(cli.Command)\n\tif binaryName == \"\" {\n\t\tbinaryName = \"cli\"","sourceCodeStart":71,"sourceCodeEnd":107,"githubUrl":"https://github.com/flipped-aurora/gin-vue-admin/blob/3136500ef380842b0eb6c4daa87c3f8a47fcf9e0/server/plugin/ai/service/sys_cli_build.go#L71-L107","documentation":"compileCliBinary creates the CLI build root directory with os.MkdirAll(absBuildRoot, 0o755). If directory creation fails — permission denied, parent path is a file, read-only filesystem, or disk issues — this wrapped error is returned. The build cannot proceed without a writable build root.","triggerScenarios":"Running the server as a non-root user without write permission on the cliBuildDir path; cliBuildDir (or a parent) exists as a regular file; deploying with a read-only root filesystem (e.g. Kubernetes readonlyRootFilesystem or read-only Docker volume).","commonSituations":"Container hardening with read-only FS and no emptyDir/writable volume mounted at the build dir; directory created previously by root and now the service runs as an unprivileged user; path collision where a file named like the build dir exists.","solutions":["chown/chmod the build root so the server process user can write (e.g. mkdir -p <dir> && chown <user> <dir>)","Mount a writable volume at the build dir in container/K8s deployments","Point cliBuildDir at a guaranteed-writable location (e.g. /tmp or a data volume) via config","Check nothing occupies the path as a regular file (ls -la the parent and remove/rename the file)"],"exampleFix":"// before (dockerfile, read-only root)\n// no volume for build dir\n// after\nVOLUME [\"/data/gva-cli-build\"]\nENV GVA_CLI_BUILD_DIR=/data/gva-cli-build","handlingStrategy":"validation","validationCode":"probe := filepath.Join(cliBuildDir, \".write-test\")\nif err := os.WriteFile(probe, nil, 0o644); err != nil {\n    return fmt.Errorf(\"build dir not writable: %w\", err)\n}\nos.Remove(probe)","typeGuard":null,"tryCatchPattern":"bin, content, err := svc.BuildCliBinary(cli, manifest, goos, goarch)\nif err != nil {\n    if strings.Contains(err.Error(), \"创建编译根目录失败\") {\n        return nil, fmt.Errorf(\"build root %s not writable: check permissions/read-only FS\", cliBuildDir)\n    }\n    return err\n}","preventionTips":["Mount a writable volume at the build dir in containers/K8s","chown the build dir to the server process user after deployment","Keep cliBuildDir off read-only root filesystems"],"tags":["go","filesystem","permissions"],"backgroundTag":"permission-denied","analyzedSha":"3136500ef380842b0eb6c4daa87c3f8a47fcf9e0","analyzedAt":"2026-08-31T13:50:02.721Z","schemaVersion":2},"datasetVersion":"2026-08-31T19:17:28.585Z"}